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  Growth and division of active droplets provides a model for protocells

Zwicker, D., Seyboldt, R., Weber, C. A., Hyman, A. A., & Jülicher, F. (2016). Growth and division of active droplets provides a model for protocells. Nature Physics, 13(4), 408-413. doi:10.1038/nphys3984.

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 Creators:
Zwicker, David1, Author           
Seyboldt, Rabea1, Author           
Weber, Christoph A.1, Author           
Hyman, Anthony A.2, Author
Jülicher, Frank1, Author           
Affiliations:
1Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              
2External Organizations, ou_persistent22              

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 : Living matter
 Abstract: It has been proposed that during the early steps in the origin of life, small droplets could have formed via the segregation of molecules from complex mixtures by phase separation. These droplets could have provided chemical reaction centres. However, whether these droplets could divide and propagate is unclear. Here we examine the behaviour of droplets in systems that are maintained away from thermodynamic equilibrium by an external supply of energy. In these systems, droplets grow by the addition of droplet material generated by chemical reactions. Surprisingly, we find that chemically driven droplet growth can lead to shape instabilities that trigger the division of droplets into two smaller daughters. Therefore, chemically active droplets can exhibit cycles of growth and division that resemble the proliferation of living cells. Dividing active droplets could serve as a model for prebiotic protocells, where chemical reactions in the droplet play the role of a prebiotic metabolism.

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 Dates: 2016
 Publication Status: Published online
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 Rev. Type: -
 Identifiers: DOI: 10.1038/nphys3984
Other: cbg-6828
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Title: Nature Physics
  Other : Nat. Phys.
Source Genre: Journal
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Publ. Info: London : Nature Pub. Group
Pages: - Volume / Issue: 13 (4) Sequence Number: - Start / End Page: 408 - 413 Identifier: ISSN: 1745-2473
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000025850